LV5980MD Datasheet, PDF (1/20 Pages) ON Semiconductor – Step-down Switching Regulator

Ordering number : ENA2233
LV5980MD
Bi-CMOS IC
Low power consumption and highefficiency
Step-down Switching Regulator
http://onsemi.com
Overview
LV5980MD is 1ch DCDC converter with built-in power Pch MOSFET.
The recommended operating range is 4.5V to 23V.
The maximum current is 3A. The operating current is about 63μA,
and low power consumption is achieved.
Features and Functions
• 1ch SBD rectification DCDC converter IC with built-in power Pch MOSFET
• Typical value of light load mode current is 63μA
• 4.5V to 23V Operating input voltage range
• 100mΩ High-side switch
• Output voltage adjustable to 1.235V
• The oscillatory frequency is 370kHz
• ON/OFF Function
• built-in OCP circuit with P-by-P method
• When P-by-P is generated continuously, it shifts to the HICCUP operation
• External capacitor Soft-start
• Under voltage lock-out, thermal shutdown
SOIC10
Applications
• Set top boxes
• Point of load DC/DC converters
• White Goods
• DVD/Blu-ray™ drivers and HDD
• Office Equipment
• LCD monitors and TVs
• POS System
Application Circuit Example
VIN
C1
C3
1μF
10μF
×2
EN
R1
VIN
47kΩ
C4 C6 C5
1μF 4.7nF 2.2nF
VIN
L1 10μH
VOUT
PDR
SW
D1
5V
R3 C2
EN
REF
LV5980MD
FB
10μF
×3
R2
COMP
SS/HICCUP
SUBGND GND
C1: GRM31CB31E106K [murata]
C2: C2102JB0J106M [TDK]
L1: FDVE1040-100M [TOKO]
D1: SB3003CH [ON]
100
VOUT = 5V
90
80
70
Efficiency
VIN=8V
VIN=15V
VIN=12V
60
50
40
30
20
10
0
0.1 ^{2 3 5 7} 1 ^{2 3 5 710 2 3 5 7100 2 3 5 71000 2 3 5 710000}
Load current -- mA
ORDERING INFORMATION
See detailed ordering and shipping information on page 20 of this data sheet.
Semiconductor Components Industries, LLC, 2013
October, 2013
O3013NK 20131009-S00001 No.A2233-1/20